diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 371046337db..2b339876c7e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-11-11  Geoffrey Keating  <geoffk@apple.com>
+
+	* Makefile.in (macro_list): Use move-if-change to avoid spurious
+	rebuilds.
+
 2004-11-12  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/18416
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 29fe6c1b009..359b7125c16 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -2792,7 +2792,8 @@ macro_list : $(GCC_PASSES)
 	echo | $(GCC_FOR_TARGET) -E -dM - | \
 	  sed -n 's/^#define \([^_][a-zA-Z0-9_]*\).*/\1/p ; \
 		s/^#define \(_[^_A-Z][a-zA-Z0-9_]*\).*/\1/p' | \
-	  sort -u > $@
+	  sort -u > tmp-$@
+	$(SHELL) $(srcdir)/../move-if-change tmp-$@ $@
 
 # Build fixed copies of system files.
 stmp-fixinc: gsyslimits.h macro_list \